Blocking diode?

Discussion in 'Post Your Photos' started by tonydenne, May 24, 2010.

  1. tonydenne

    tonydenne WindyNation Engineer

    Hi, do I need a blocking diode if the charge from the turbine is going to the batteries via a charge controller. Will the charge leak back through the controller to the wind turbine/solar panels?
    Thanks
    Tony
     
  2. TomT

    TomT WindyNation Engineer

    DC Generator or AC Generator?
     
  3. tonydenne

    tonydenne WindyNation Engineer

    Sorry Tom!
    Yes it's the DC generator bought from yourselves via eBay some time ago.
    I'm just refreshing my memory as to what components to use...
    Tony
     
  4. TomT

    TomT WindyNation Engineer

    Actually the one that Windy Nation sells is a 3 phase ac generator and you need a rectifier for that which they also sell. http://www.windynation.com/web/catalog/5
    You will also need a blocking diode for the solar panels. http://www.windynation.com/web/catalog/7

    The rating of the diodes and or rectifier should be rated at least 20 % more than the max of the current.

    Watts divided by Voltage=Amps 500watts/12volts=41.66 750watts/12volts=62.5 Thats why I used and they sell a 80amp rectifier.
     
  5. murray2paddles

    murray2paddles WindyNation Engineer

    Tony
    just in case you are anything like me and when you read info on watts and amps and formulas when you are starting out it can be confusing and some what overwhelming. So, if that is the case don't be shy to tell anyone " slow down " If you need pics ,for any show and tell, just ask. Many of us might be able to help or send something.
     
  6. TomT

    TomT WindyNation Engineer

    Well I'm telling him that just to be sure it is over rated just to make sure that the diode doesn't burn out in a high wind and drop the load off of the wind turbine and allow it it to run wild and destroy itself.

    TomT
     
  7. murray2paddles

    murray2paddles WindyNation Engineer

    your right on Tom and real good info..
     
  8. tonydenne

    tonydenne WindyNation Engineer

    Many thanks ALL,
    The generator is the 160V 8amp permanent magnet DC generator.
    I understand most of the tech stuff but I just wanted to clarify that the current will or will not leak back through the charge controller (Windy Nation 40amp) to the turbine or solar panels from the batteries?
    From your replies I'm guessing it does so I will need an appropriate blocking diode for both elements...
    Thanks again
    Tony
     
  9. windyguru

    windyguru WindyNation Expert

    You will only need one 40 amp blocking diode. If you follow the wiring instructions, it will show you where to put the diode.
     
  10. tonydenne

    tonydenne WindyNation Engineer

    Thanks again,
    The wiring diagram for the 40amp charge controller shows a blocking diode for each of the two components (solar & wind) if I connect both components to the one diode would that send current from the wind generator to the solar panels or vice versa :?:
    Tony
     
  11. TomT

    TomT WindyNation Engineer

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